Oil-immersed capacitor convenient for heat dissipation

Abstract

The invention discloses an oil-immersed capacitor convenient for heat dissipation, and belongs to the technical field of capacitors. The oil-immersed capacitor is characterized in that the oil-immersed capacitor comprises a shell, a capacitor body and a cooling mechanism; the capacitor body is fixedly installed in the shell, and the cooling mechanism and the installation plate are fixedly installed on one side of the exterior of the shell. The cooling mechanism comprises a cooling box, a first infusion pump, a cooling pipe, a liquid inlet pipe and a liquid return pipe, the liquid inlet pipe and the liquid return pipe are arranged at the two ends of the cooling pipe, the cooling pipe is fixedly installed on the inner wall of the cooling box, the liquid inlet pipe is connected with the interior of the shell through an inlet pipe of the first infusion pump, and the liquid return pipe is connected with the interior of the shell. According to the invention, the liquid in the cooling box can be ensured to conveniently cool the insulating oil in the shell for a long time.

Description

Technical Field

[0001] This invention relates to the field of capacitor technology, and more specifically, to an oil-immersed capacitor that facilitates heat dissipation. Background Technology

[0002] Oil-immersed capacitors are power components that use insulating oil as the core insulation and heat dissipation medium. The core structure includes a core, insulating oil, and a sealed metal shell. They are commonly used in high-voltage, high-power applications such as power compensation in power systems and motor starting. The core is made of metal foil electrodes wrapped alternately with insulating paper / film, and is completely immersed in mineral oil or synthetic insulating oil. The sealed shell prevents oil leakage and impurities from entering. During operation, the insulating oil not only isolates the electrodes from conducting electricity but also conducts heat from the core to dissipate heat. Its advantages are strong insulation performance, high voltage resistance, and good heat dissipation, making it suitable for high-load conditions. However, it has significant drawbacks: the insulating oil is flammable and easily oxidized, and may burn and explode in case of failure. Regular oil quality checks and maintenance are required. In addition, it is large and heavy, limiting its applicability in miniaturized and high-safety-requirement scenarios.

[0003] In the current technology, the core of an oil-immersed capacitor is sealed in insulating oil and placed inside a casing. During long-term operation, it will continuously generate heat. Although current products are equipped with heat dissipation structures, the heat dissipation efficiency of these structures is insufficient and cannot dissipate the internal heat in time. The long-term accumulation of heat will cause the pressure inside the casing to gradually increase. When the pressure exceeds the casing's tolerance limit, it is easy to cause the casing to rupture, and in severe cases, it may even explode, directly affecting the safe operation of the capacitor. Summary of the Invention

[0004] To address the above problems, this invention proposes an oil-immersed capacitor that facilitates heat dissipation, characterized by comprising: a housing, a capacitor body, and a cooling mechanism;

[0005] The capacitor body is fixedly installed inside the housing, while the cooling mechanism and the mounting plate are fixedly installed on one side of the exterior of the housing.

[0006] The cooling mechanism includes: a cooling chamber, a first liquid pump, a cooling pipe, and inlet and return pipes at both ends of the cooling pipe. The cooling pipe is fixedly installed on the inner wall of the cooling chamber. The inlet pipe is connected to the inside of the housing through the inlet pipe of the first liquid pump, and the return pipe is connected to the inside of the housing.

[0007] Optionally, the first liquid pump is used to draw the insulating oil inside the housing into the cooling pipe through the liquid inlet pipe, so that the insulating oil is cooled in the cooling chamber and then input into the housing through the liquid return pipe.

[0008] Optionally, the cooling pipes are arranged in an S-shape.

[0009] Optionally, a check valve is fixedly installed on the return pipe.

[0010] Optionally, a water inlet pipe is provided on the top side of the cooling box, and a drain pipe is provided on one side of the cooling box, with the drain pipe being compatible with the water inlet pipe.

[0011] Optional, the cooling chamber includes a cooling mechanism for cooling the water inside the cooling chamber.

[0012] Optional cooling mechanisms include:

[0013] The second liquid pump is fixedly installed on the cooling box, and the extraction pipe of the second liquid pump is connected to the cooling box. The other end of the extraction pipe is connected to a miniature chiller, which is fixedly installed on the cooling box.

[0014] Optionally, a return water pipe is connected to the other end of the miniature chiller, and the other end of the return water pipe is fixedly installed on the cooling box and connected to the cooling box.

[0015] Optionally, the second pump is used to extract water from the cooling box through the extraction pipe, cool it through a micro chiller, and then inject it back into the cooling box through the return pipe.

[0016] Optionally, it also includes: a temperature measuring mechanism, including:

[0017] Mounting plate, temperature display and temperature sensor;

[0018] The temperature display and temperature detection sensor are fixed to the mounting plate, which is fixed to one side of the housing;

[0019] The temperature sensor is used to detect the temperature of the oil-immersed capacitor and transmit the temperature data to a temperature display, which then displays the temperature of the oil-immersed capacitor in real time.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] This invention provides an oil-immersed capacitor with convenient heat dissipation, characterized by comprising: a housing, a capacitor body, and a cooling mechanism; the capacitor body is fixedly installed inside the housing, and the cooling mechanism and the mounting plate are fixedly installed on one side of the exterior of the housing; the cooling mechanism includes: a cooling chamber, a first liquid pump, a cooling pipe, and inlet and return pipes at both ends of the cooling pipe; the cooling pipe is fixedly installed on the inner wall of the cooling chamber, the inlet pipe is connected to the interior of the housing through the inlet pipe of the first liquid pump, and the return pipe is connected to the interior of the housing. The application of this invention ensures that the liquid in the cooling chamber can easily cool the insulating oil inside the housing for an extended period. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0023] Figure 2 This is a side view of the structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the connection structure between the cooling box and the cooling pipe of the present invention;

[0025] Figure 4 This is a schematic diagram of the connection structure of the housing, temperature sensor and temperature display of the present invention.

[0026] The components include: 1. Shell; 2. Capacitor body; 3. Cooling chamber; 31. Cooling pipe; 32. Return pipe; 33. Check valve; 34. First liquid pump; 35. Inlet pipe; 36. Water injection pipe; 37. Drain pipe; 4. Second liquid pump; 41. Extraction pipe; 42. Miniature chiller; 43. Return water pipe; 5. Mounting plate; 51. Temperature display; 52. Temperature detection. Detailed Implementation

[0027] Exemplary embodiments of the invention will now be described with reference to the accompanying drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the drawings is not intended to limit the invention. In the drawings, the same units / elements are referred to by the same reference numerals.

[0028] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0029] Example 1:

[0030] This invention proposes an oil-immersed capacitor that facilitates heat dissipation, such as... Figures 1-4 As shown, it includes:

[0031] The housing 1 contains a capacitor body 2 fixedly installed inside. A cooling mechanism and a temperature measuring mechanism are installed on one side of the housing 1. The cooling mechanism includes a cooling chamber 3, which is fixedly installed on one side. A cooling pipe 31 is fixedly installed on the inner wall of the cooling chamber 3, and the cooling pipe 31 is arranged in an S-shape. A return pipe 32 is provided on one side of the housing 1, and the other end of the return pipe 32 is connected to the bottom end of the cooling pipe 31. A cooling mechanism is installed on the cooling chamber 3. A one-way valve 33 is fixedly installed on the housing 1 and is fixedly installed on the return pipe 32. A first liquid pump 34 is fixedly installed on the housing 1. The inlet pipe of the first liquid pump 34 is connected to the housing 1, and the outlet pipe of the first liquid pump 34 is connected to... There is an inlet pipe 35, the other end of which is connected to the top of the cooling pipe 31. A water injection pipe 36 is provided on the top side of the cooling box 3, and a drain pipe 37 is provided on one side of the cooling box 3. The drain pipe 37 is compatible with the water injection pipe 36. By using the pipes, the heated insulating oil inside the shell 1 is extracted to the outside of the shell 1. This not only achieves cooling of the insulating oil under good sealing conditions outside the shell 1, but also improves the cooling efficiency by cooling the insulating oil outside the shell. Furthermore, cooling the capacitor body 2 by cooling the insulating oil effectively avoids directly cooling the capacitor body 2, which could easily cause a sudden drop in the surface temperature of the capacitor body 2 and damage the capacitor body 2.

[0032] Furthermore, the cooling box 3 is equipped with a cooling mechanism for cooling the insulating oil that flows slowly inside the cooling pipe 31.

[0033] Specifically, the cooling mechanism includes a second liquid pump 4, which is fixedly installed on the cooling box 3. The inlet pipe of the second liquid pump 4 is connected to the cooling box 3. The outlet pipe of the second liquid pump 4 is connected to an extraction pipe 41. The other end of the extraction pipe 41 is connected to a miniature chiller 42, which is fixedly installed on the cooling box 3. The other end of the miniature chiller 42 is connected to a return water pipe 43, which is fixedly installed on the cooling box 3 and connected to it. By pumping the heated liquid in the cooling box 3 into the miniature chiller 42 through the second liquid pump 4, the heated liquid is cooled again by the miniature chiller 42. Then, the cooled liquid is transported back to the cooling box 3, which facilitates the continuous cooling of the insulating oil in the shell 1 and also facilitates the rational use of water resources.

[0034] Furthermore, a temperature measuring mechanism for real-time monitoring of the insulating oil inside the housing 1 is installed on one side of the housing 1.

[0035] Specifically, the temperature measuring mechanism includes a mounting plate 5, which is fixedly installed on one side of the housing 1. A temperature display 51 is fixedly installed on the mounting plate 5, and a temperature detection sensor 52 is fixedly installed on the inner wall of the corresponding side of the housing 1. The temperature detection sensor 52 and the temperature display 51 are electrically connected via a signal line. By using the temperature detection sensor 52, the temperature of the insulating oil inside the housing 1 can be directly monitored in real time, preventing the housing 1 from cracking or exploding when the insulating oil inside the housing 1 is at a high temperature. When the insulating oil inside the housing 1 is at a low temperature, the capacitor body 2 inside the housing 1 cannot work normally. At the same time, the temperature display 51 allows for a direct view of the temperature inside the housing 1, providing greater convenience for the staff.

[0036] The working principle is as follows: During the use of the capacitor body 2 inside the housing 1, the capacitor body 2 generates a certain amount of heat. At this time, the temperature detection sensor 52 monitors the temperature of the insulating oil inside the housing 1. When the temperature value displayed on the temperature display 51 is high, the switch on the first liquid pump 34 is activated. The first liquid pump 34 draws the insulating oil inside the housing 1 into the liquid pipe 35, and then transports it through the liquid inlet pipe 35 to the cooling pipe 31 inside the cooling box 3. Before the insulating oil is drawn out, a certain amount of cold oil is injected into the cooling box 3. As the insulating oil slowly flows into the cooling pipe 31, the cold oil in the cooling box 3 can be used to cool the oil. The high-temperature insulating oil in the cooling pipe 31 is cooled down. After cooling, the insulating oil flows back into the shell 1 through the return pipe 32 and mixes with the high-temperature insulating oil in the shell 1. By cooling the insulating oil in the shell 1, the capacitor body 2 in the shell 1 is cooled down. After the coolant in the cooling box 3 is used up, the switch on the second liquid pump 4 is turned on. The second liquid pump 4 is used to pump the heated liquid in the cooling box 3 into the micro chiller 42. The micro chiller 42 cools the heated liquid down again and then sends the cooled liquid back into the cooling box 3 to facilitate continuous cooling of the insulating oil in the shell 1.

[0037] This invention, through the arrangement of a cooling chamber, cooling pipe, one-way valve, miniature chiller, return water pipe, temperature display, and temperature detection sensor, allows the insulating oil inside the capacitor body to be drawn into the cooling pipe during use. The cold water in the cooling chamber cools the slowly flowing, high-temperature insulating oil. The cooled insulating oil is then transported from the bottom of the casing to the interior, thus achieving cooling of the capacitor body inside. Simultaneously, a temperature sensing component inside the casing allows for real-time monitoring of the internal temperature, ensuring the capacitor body operates at a suitable temperature. Furthermore, the miniature chiller allows for further cooling of the liquid inside the cooling chamber after use, ensuring that the liquid in the cooling chamber can effectively cool the insulating oil inside the casing for extended periods.

[0038] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of the present invention can be implemented using various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.

[0039] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0040] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0041] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0042] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0043] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An oil-immersed capacitor for easy heat dissipation, characterized in that, include: Housing, capacitor body, and cooling mechanism; The capacitor body is fixedly installed inside the housing, while the cooling mechanism and the mounting plate are fixedly installed on one side of the exterior of the housing. The cooling mechanism includes: a cooling chamber, a first liquid pump, a cooling pipe, and inlet and return pipes at both ends of the cooling pipe. The cooling pipe is fixedly installed on the inner wall of the cooling chamber. The inlet pipe is connected to the inside of the housing through the inlet pipe of the first liquid pump, and the return pipe is connected to the inside of the housing.

2. The oil-immersed capacitor according to claim 1, characterized in that, The first liquid pump is used to draw insulating oil from inside the housing into the cooling pipe through the liquid inlet pipe, so that the insulating oil is cooled in the cooling chamber and then input into the housing through the liquid return pipe.

3. The oil-immersed capacitor according to claim 1, characterized in that, The cooling pipes are arranged in an S-shape.

4. The oil-immersed capacitor according to claim 1, characterized in that, A one-way valve is fixedly installed on the return pipe.

5. The oil-immersed capacitor according to claim 1, characterized in that, The cooling box has a water inlet pipe on its top side and a drain pipe on one side, which are compatible with the water inlet pipe.

6. The oil-immersed capacitor according to claim 1, characterized in that, The cooling chamber includes a cooling mechanism for cooling the water inside the chamber.

7. The oil-immersed capacitor according to claim 6, characterized in that, The cooling mechanism includes: The second liquid pump is fixedly installed on the cooling box, and the extraction pipe of the second liquid pump is connected to the cooling box. The other end of the extraction pipe is connected to a miniature chiller, which is fixedly installed on the cooling box.

8. The oil-immersed capacitor according to claim 7, characterized in that, The other end of the miniature chiller is connected to a return water pipe, and the other end of the return water pipe is fixedly installed on the cooling box and connected to the cooling box.

9. The oil-immersed capacitor according to claim 7, characterized in that, The second pump is used to draw water from the cooling box through the extraction pipe, cool it through a micro chiller, and then inject it back into the cooling box through the return pipe.

10. The oil-immersed capacitor according to claim 1, characterized in that, Also includes: Temperature measurement mechanism, including: Mounting plate, temperature display and temperature sensor; The temperature display and temperature detection sensor are fixed to the mounting plate, which is fixed to one side of the housing; The temperature sensor is used to detect the temperature of the oil-immersed capacitor and transmit the temperature data to a temperature display, which then displays the temperature of the oil-immersed capacitor in real time.

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